JQ: Improved performance of strings (#3084)

Author: RunDevelopment

components/prism-jq.js

@@ -1,7 +1,7 @@
 (function (Prism) {
 
 	var interpolation = /\\\((?:[^()]|\([^()]*\))*\)/.source;
-	var string = RegExp(/"(?:[^"\r\n\\]|\\[^\r\n(]|__)*"/.source.replace(/__/g, function () { return interpolation; }));
+	var string = RegExp(/(^|[^\\])"(?:[^"\r\n\\]|\\[^\r\n(]|__)*"/.source.replace(/__/g, function () { return interpolation; }));
 	var stringInterpolation = {
 		'interpolation': {
 			pattern: RegExp(/((?:^|[^\\])(?:\\{2})*)/.source + interpolation),
@@ -21,11 +21,13 @@
 		'comment': /#.*/,
 		'property': {
 			pattern: RegExp(string.source + /(?=\s*:(?!:))/.source),
+			lookbehind: true,
 			greedy: true,
 			inside: stringInterpolation
 		},
 		'string': {
 			pattern: string,
+			lookbehind: true,
 			greedy: true,
 			inside: stringInterpolation
 		},